JPS5812646Y2 - cosmetic applicator - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a cosmetic applicator, and particularly to a cosmetic applicator whose applicator portion is made of a porous material such as a foam.

In recent years, with the advancement of cosmetic technology, there has been a noticeable shift in cosmetic application tools from conventional brush materials to porous materials such as foamed polyurethane and foamed rubber.

This can be attributed to the fact that the softness of the porous material enhances the feel during application, and that the pores of the porous material improve the absorption of the cosmetic.

These applicators are often used as cosmetic applicators for the periphery of the eyes.

The manufacturing method includes interposing a flexible core between two foamed sheets and punching them into a bullet shape to form an application part, and then connecting the core and the handle. It is something to be molded.

In the other method, the tip of the complement is formed into a thin layer to form a core, and the application part is formed as in the former method.

These conventional porous applicators formed as described above are mainly shaped like a cannonball or triangular with rounded corners in terms of ease of application and the purpose of the application location. It is.

However, a problem with all of these applicators is that a fusion bond between the two sheets cannot be formed on one side of the applicator into which the core is inserted, that is, on the handle side.

Since the applicator is formed by interposing the core between the two sheets I, the portion facing the complement ends up having an umbrella-like shape as described above.

For this reason, when the cut surface of the unfused part of the sheet, which is the hem of the applicator, comes into contact with the skin during application, it gives a feeling of irritation, and it is also unfavorable in terms of appearance as an applicator, and when used for a long time. Since there is a large step between the unfused part of the hem of the applicator and the complement, cosmetics accumulate in this part, causing conspicuous staining, which is unsanitary, and improvements have been desired.

On the other hand, in order to solve the above-mentioned problems with this type of applicator, it is necessary to consider how to treat the unfused portion of the hem of the applicator.

It has been found that this can be done by burying the unfused part of the hem of the applicator in a part of the complement, but it is also possible to do so by using a cosmetic applicator. As a function, there was a limiting condition that made it impossible to make the complement larger than the coating material.

Therefore, if the hem of the applicator, which is larger than the diameter of the handle, can be rationally buried within the complement body, the above-mentioned problem can be solved.

The present invention was developed in view of these backgrounds, and its purpose is to eliminate the above-mentioned problems with conventional applicators of this type, and to develop a coating material obtained from a porous material as a coating material. An object of the present invention is to provide an applicator that can rationally and efficiently embed the unfused portion of the hem of the body in the complement body.

The present invention is characterized by a cylindrical member, a slit formed along the longitudinal direction of the cylindrical member, an engaging protrusion formed along the circumferential direction on the inner surface of the cylindrical member, and a slit formed along the longitudinal direction of the cylindrical member; a core formed with a flange that abuts the engagement protrusion;
and a coating material that covers the surface of the core.

Initially, the inventor tried to embed the hem of the coating material by simply forming a hollow part at the tip of the complement, but the work of piercing the porous coating material larger than the diameter of the complement with a needle-like object was extremely laborious and time consuming. The idea was that it would require a lot of effort and could not be mass-produced, so we gave up on it.

However, it was also found that the porous material used as the coating material has elasticity and can relatively easily respond to external stress.

In this, the inventor made the tip of the complement hollow, and by using a complement that formed a thin crack (slit) in the direction of the axial hole in the hollow side part, the application material could be applied extremely easily. I discovered that it can be buried in complement.

At the same time, it was also discovered that by providing a locking part on the inner side surface of the complement hollow part, the coating material does not fall out from the complement.

Furthermore, after setting the coating material and complement, we have found a method to close the crack (slit part) without causing any discomfort in appearance.

To explain the present invention with reference to the drawings, FIG. 1 is an overall view, and FIG. 2 is a diagram of the fitted state of the end of the handle body.

Moreover, FIG. 3 is an overall view of a device in which coating bodies are provided at both ends.

The cylindrical member 1 serving as a complement is made of polyethylene, polypropylene, polyamide, ABS, AS, or polystyrene.

It is molded by injection molding from a synthetic resin material such as polyacetal or polyester.

As for the shape, it can be formed into any shape such as round, square, elliptical, flat, etc.

The end of the cylindrical member 1 is formed into a hollow part 5, and a locking part 4 is provided on the inner surface of the side surface 6 of the hollow part 5.

Since the locking portion 4 has the role of pressing the coating material from the outside to stop its movement, it always has a shape with a convex portion, and preferably has a triangular or trapezoidal rib structure.

A plurality of locking portions 4 is more effective than a single locking portion.

Further, the position of the locking portion 4 must be within the dimensional range of the slit portion 2, which will be described in detail later.

Next, a crack or slit portion 2 is formed in the side surface 6 of the hollow portion 5 at the tip of the cylindrical member 1, parallel to the axial direction of the cylinder, that is, in the longitudinal direction, and having a split portion 7 at the end.

The slit portion 2 has a triangular shape, and its width gradually decreases as it goes deeper from the tip.

The efficiency of inserting the coating material is better when there is a plurality of slits 2 rather than a single slit.

Further, it is advantageous that the slit portions 2 are arranged symmetrically on the left and right sides so that the slit portion 2 can be easily closed.

Next, as shown in Figure 2, the coating section is made of polyamide.

The surface of the core body 8 is made of a flexible synthetic resin material such as polyester, polypropylene, polyethylene, polyvinyl chloride, polyurethane, etc., and foams of various synthetic resins such as foamed urethane, foamed rubber, etc. It is coated with a material that has been subjected to flocking treatment or seed grain treatment, that is, a coating material 3.

A flange 9 is provided at the lower part of the core body 8 to come into contact with the engagement protrusion 4 .

From this, when fitting and fixing the application part and the cylindrical member,
External fixation can be achieved by the closing pressure of the slit 2,
The internal fitting and fixation can be achieved by the engagement protrusion 4 and the flange 9 coming into contact with each other.

Describing the process of joining the coating material 3 and the cylindrical member 1 as described above, first, a new coated material 3 is inserted into the entrance of the cylindrical member 1 so that the hem part of the coating material 3 is buried.

Next, press processing is performed using a pressure press machine until the slit portion 2 is closed.

When the slit portions are in a state of close contact between the upper and lower sides after the pressing process, ultrasonic waves are oscillated from above or below the slit portions to melt and bond the close contact portions of the slit portions.

In addition, as another method, the slit portion 2 is
There is also a method of applying a hotmelt adhesive or an adhesive such as isocyanate to the surface and then applying pressure to fix it.

However, it should be noted that the ultrasonic bonding method from the finished state of the cylindrical member 1, which is the complement after the fixation process, is good.

The applicator manufactured by the method described above solves all the problems of conventional applicators of this type, and has an excellent appearance7, with no finishing application parts removed. Blinking has many advantages and greatly contributes to the industry, such as no phenomenon and no physical exertion during use, and the production can be automated and economically efficient.

[Brief explanation of the drawing]

FIG. 1 is an overall view, FIG. 2 is a diagram of the complement end in a fitted state, and FIG. 3 is an overall view of the device with applicators provided at both ends. Main symbols 1...Cylindrical member, 2...Slit, 3...Applying material, 4...Engaging protrusion, 5...Hollow Part, 6... Hollow part side surface, 7... Tip split part, 8... Core body, 9
...Flange.

Claims (1)

[Claims for Utility Model Registration] A cylindrical member 1, a slit 2 formed along the longitudinal direction of the cylindrical member 1, and an engaging protrusion 4 formed on the inner surface of the cylindrical member 1 along the circumferential direction. and a core 8 formed with a flange 9 that abuts the engagement protrusion 4.
A cosmetic applicator comprising: and a coating material 3 that covers the surface of the core 8.